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CWEA Collections Grade 2 Practice Test Rated A Why are gasoline and volatile solvents objectionable when present in a sewer?✔✔ They produce an explosion hazard You should never attempt to install, troubleshoot, maint ...

CWEA Collections Grade 2 Practice Test Rated A Why are gasoline and volatile solvents objectionable when present in a sewer?✔✔ They produce an explosion hazard You should never attempt to install, troubleshoot, maintain, repair, or replace electrical equipment unless:✔✔ You know what you are doing, are qualified, and are authorized. How many different areas of traffic zones are there when working in roadways?✔✔ Five Why should hydrogen sulfide be controlled?✔✔ To protect sewers and structures from corrosion Personnel entering a Permit Required Confined Space must have the following training:✔✔ Entry and rescue procedures To find proper protective gear before application of a product, you would:✔✔ Look at the MSDS (Material Safety Data Sheet) The gas most commonly associated with septic wastewater is:✔✔ Hydrogen Sulfide (H2S) The lack of an unpleasant odor in a structure does not always mean that dangerous gases are not present because:✔✔ Some dangerous gases have no odor What four conditions are necessary to create an explosion?✔✔ Combustible gas, adequate oxygen, sufficient heat, and proper mixing of gas and oxygen. What does "transition area" mean in traffic control?✔✔ Moves traffic out of its normal path The term "transition area" is one component of a:✔✔ Traffic Control Zone What elements should be considered to improve worker safety in High Speed Temporary Traffic Control Zones?✔✔ Rerouting traffic around the work site, positioning of law enforcement officers in the temporary traffic control zone, and work zone training. What key factors would you need to address when developing an S.O.P. for Lift Station failure?✔✔ Traffic control plan, by-pass connections, and spill containment. "Spring Blades" are a type of tool used with:✔✔ Power Rodder Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for:✔✔ Sewer rodding What tool would you use to cut VCP pipe?✔✔ Chain pipe cutter Which conditions should a gas detection device test for?✔✔ Hydrogen Sulfide, explosive/flammable gases, oxygen. What does "LEL" mean on a gas detection meter?✔✔ Lower explosive limit The oxygen level alarm in a gas detection meter is normally set to go off at oxygen levels below:✔✔ 19.5% When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be addressed as a primary safety guideline?✔✔ The L.O.T.O. (Lock Out Tag Out)

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